3D laser scanning technology is now widely and increasingly used to create as-built 3D CAD or Building Information Models (BIM) of existing facilities and new construction. Errors occurred during scanning and data processing stages cause a higher registration error, which in return lead to inaccuracies during the modeling stage. The paper introduces 3D laser scanning technology and its applications. It also reviews consecutive steps of creating as-built BIM using 3D laser scanning technology and identifies the sources of error and inefficiencies at each stage. The focus of this study is on the accuracy of scanned point cloud registration as well as time requirements for different processes in currently practiced scanning operations.